top of page

SVZ Internal Performance Center® is more than just another personal training team that over-promises "results" and under-delivers. We believe the use of trendy haphazard methods simply designed to fatigue clients is by definition malpractice. Exercises designed with everyone in mind in reality helps no one. We pride ourselves on having the most attentive, educated, and skilled staff to handle the simplest to most complex biomechanical issues related to muscle function. Each session is 100% TAILORED for YOU!

Whether you're seeking assistance for movement limitations, joint or muscle pain, orthopedic issues, post rehab, old injuries, or simply looking to improve your general fitness we can help to ensure you're doing so in a sustainable manner. Remember if your methods are not sustainable your results won't be either! So don't wait and contact us today!

Interested in joining our team?
Email with your resume and statement of interest.

* All applicants are required to attend or have previously attended the Resistance Training Specialist® Foundations course upon employment. For more information please checkout


Kathy Fortnash


Personal Trainer

Kathy is certified through the American Council of Exercise. She has worked in an Orthopedics office for many years as a Medical Assistant and Physical Therapy Technician. 

She specializes in injury rehabilitation and strengthening particularly within the senior population. Her aim is to restore the function needed to tolerate the tasks of daily living so that her clients can lead a fully active lifestyle without restriction. 


Dr. Samuel Rivera


Dr. Nicolas Acosta


Inspired by fitness and sports, Dr. Nicholas Acosta received his Doctorate of Physical Therapy from the University of St. Augustine in Miami, FL.


Dr. Acosta has over 10 years of experience in fitness, health, and rehabilitation. His clinical experiences include orthopedic, post-surgical, neurological, and vestibular rehabilitation and has worked with patients of all ages and abilities, from NFL athletes to geriatric rehabilitation.


With a focus on movement and manual therapy, Dr. Acosta uses the most up-to-date research-based treatment approaches during your sessions. Dr. Acosta strives to help you reach your goals so that you can return to your activities as quickly and successfully as possible.

Dr. Samuel Rivera received his Doctorate of Physical Therapy from the University of Saint Augustine in Miami, FL.  


Dr. Rivera’s experience as a physical therapist has been in outpatient orthopedics and home health. He has experience with a variety of populations varying from athletes, at the high school & collegiate level, to the geriatric population. 


Dr. Rivera has also treated the diagnoses of neurological conditions such as vertigo, stroke, Parkinson’s disease & cerebral palsy. On his free time, Dr. Sam likes to workout, play sports, and spend time with family & friends. 

bottom of page